Some web-based companies are selling DVX100B packages that include (among other things) a wide angle and a telephoto lens. Can you physically attach a lens like that to the DVX100B, or is this just some kind of scam?
There are quality wide-angle options, from Century Optics, the Red Eye, and the Panasonic to name a few; and a quality teleconverter option available from Century Optics. But if you're looking at anything that says "Digital Optics" or "Crystal Optics" or "Crystal Vision", that's a good sign that should be very careful about how you choose to conduct your business.